“…Peaks 1 – 3 , 5 , 32 , 33 and 37 were identified as quinic acid, citric acid, succinic acid, vanillic acid, carnosic acid, linolenic acid and palmitic acid, respectively, by comparing their MS/MS profiles with the published data (de la Luz Cádiz‐Gurrea, Fernández‐Arroyo, Joven, & Segura‐Carretero, ; Maringer, Ibáñez, Buchberger, Klampfl, & Causon, ; Riffault et al, ; Santos, Freire, Domingues, Silvestre, & Pascoal, ; Sun et al, ; Zeng, Xiao, Liu, & Liang, ). For these peaks with one or two carboxyl groups, the characteristic fragments were supported by their common losses of CO 2 (44 Da).…”